Volume-II of IV - GAIL

13.7 Unless specified otherwise. Valves shall confirm to the following
standards:
Screwed / Socket welded / Flanged end valves (1 ½” and below)
Ball Valves - BS 5351
Plug Valves - BS 5353
Check Valves - BS 5352
Globe Valves - BS 5352
Gate Valves - API 602
Flanged / Butt weld end Valves (2” and above)
Ball Valves - API 6D
Plug Valves - API 6D
Check Valves - BS 1868
Globe Valves - BS 1873
Gate Valves - API 600
13.8 Valve operators shall be as indicated below, unless specified otherwise in
the P&ID.
a) Gate and Globe Valves
i) For ANSI class 150 and 300 -Hand Wheel operated for size
14” NB.
ii) For ANSI class 600 - Hand Wheel operated for size 12” NB.
b) Ball and Plug Valves
i) For ANSI class 150, 300, 600 – Wrench operated for size 6”NB.
14.0 QUICK OPENING END CLOSURE
Quick opening end closure to be installed on scraper traps shall be equipped with
safety locking devices in compliance with section VIII, division 1, UG-35 (b) of
ASME Boiler and Pressure Vessel code.
15.0 HYDRO TESTING VENTS AND DRAINS
High point vents and low point drains required for the purpose of hydro testing
shall be of size 0.75” and consist of sockolet, gate valve, flange & blind flange.
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